As-Grown Versus Ion-Milled MgB<sub>2</sub> Ultrathin Films for THz Sensor Applications

Acharya, Narendra; Wolak, Matthaeus; Melbourne, Thomas; Cunnane, Daniel; Karasik, Boris S.; Xi, Xiaoxing

doi:10.1109/tasc.2016.2645126

Cited by 5 publications

(2 citation statements)

References 20 publications

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“…3). The aforementioned critical current density is of the same order of magnitude as reported before for films of the same thicknesses (10nm) but obtained using a thinning-down technique [9], [10]. Room temperature and residual resistances of the discussed device are 196Ohm and 170Ohm, respectively.…”

Section: Gain and Noise In Thz Mgb 2 Hot-electronsupporting

confidence: 69%

Gain and Noise in THz MgB2 Hot-Electron Bolometer Mixers With a 30-K Critical Temperature

Novoselov

Cherednichenko

2017

IEEE Trans. THz Sci. Technol.

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In this paper, we study variation of the MgB2 hotelectron bolometer mixer characteristics such as noise temperature, gain, output noise, and local oscillator (LO) power at 5K, 15K, and 20K bath temperatures, and at 0.69THz and 1.63THz Local Oscillator frequencies. The main reason for the noise temperature rising at higher temperatures is a reduction of the mixer gain, which occurs proportionally to the LO power reduction. Contrary to this, the output noise remains constant (for the same bias point).

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Section: Gain and Noise In Thz Mgb 2 Hot-electronsupporting

confidence: 69%

Gain and Noise in THz MgB2 Hot-Electron Bolometer Mixers With a 30-K Critical Temperature

Novoselov

Cherednichenko

2017

IEEE Trans. THz Sci. Technol.

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“…Due to the low cost and wide availability of raw materials, MgB 2 , a binary intermetallic compound, is one of the most promising superconductors for electrical applications, namely sensor [1], energy storage [2], and wire [3]. Hence, MgB 2 and its systems, as well as superconductivity, have been continually developed because of its functional properties such as high Tc of 39 K, weak link free grains, lightweight, and increased coherence [4,5].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of MgB2 superconductors with carbon nanotubes (CNTs) and tin (Sn) addition

et al. 2022

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MgB2/CNT is a promising candidate for superconducting wire application due to its excellent mechanical properties and carbon nanotube’s low density. However, strong interfacial adhesion between the CNT reinforcement and the MgB2 matrix is difficult to manage. Therefore, this study examines the synthesis and characterization of magnesium diboride (MgB2) superconductors with carbon nanotubes (CNTs) and tin (Sn) addition. Determining the proper method and combination of CNT & Sn affects MgB2 superconductors is crucial. Raw materials of magnesium (Mg), boron (B), Sn, and multi-walled carbon nanotubes (MWCNTs) were used for a solid-state reaction process to determine the proper synthesis method and the effect of CNT on superconductors’ critical temperature. Each sample was obtained by weighing the raw material first, followed by hand grinding with agate mortars for 3 hours. The pelletization was then conducted by using a compact pressing machine with a pressure of 350 MPa. The compacted samples were then sintered at 800 °C for 2 hours either through the vacuum or PIST process. Finally, all were characterized, and MgB2 was discovered to be the dominant phase with minor impurity phases such as MgO, Mg, Mg2Sn, C, and Sn. Based on SEM morphological analysis, the grain boundaries of sample A1 were more precise than B2. In both, the grain size also varies, and the distribution of elements is uneven. Subsequently, Cryogenic Magnet Characterization indicated that at 40 K, almost all samples possess superconducting characteristics. For future studies, the potential impact of MgB2 on critical current density (Jc) and magnetic density (Hc) in several commercial applications such as Magnetic Resonance Imaging (MRI), magnetic levitation, and transformers needs to be investigated

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A comprehensive study of various superconductors for superconducting nanowire single photon detectors applications

Tripathy,

Tyagi,

Pratap

2024

iScience

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As-Grown Versus Ion-Milled MgB₂ Ultrathin Films for THz Sensor Applications

Cited by 5 publications

References 20 publications

Gain and Noise in THz MgB2 Hot-Electron Bolometer Mixers With a 30-K Critical Temperature

Gain and Noise in THz MgB2 Hot-Electron Bolometer Mixers With a 30-K Critical Temperature

Synthesis and characterization of MgB2 superconductors with carbon nanotubes (CNTs) and tin (Sn) addition

A comprehensive study of various superconductors for superconducting nanowire single photon detectors applications

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As-Grown Versus Ion-Milled MgB2 Ultrathin Films for THz Sensor Applications

Cited by 5 publications

References 20 publications

Gain and Noise in THz MgB2 Hot-Electron Bolometer Mixers With a 30-K Critical Temperature

Gain and Noise in THz MgB2 Hot-Electron Bolometer Mixers With a 30-K Critical Temperature

Synthesis and characterization of MgB2 superconductors with carbon nanotubes (CNTs) and tin (Sn) addition

A comprehensive study of various superconductors for superconducting nanowire single photon detectors applications

Contact Info

Product

Resources

About

As-Grown Versus Ion-Milled MgB₂ Ultrathin Films for THz Sensor Applications